Timer-ring for ignition systems



G. FUEGEL AND H. SCHMID. TIMER RING FOR IGNITION SYSTEMS.

APPLICATION FILED AUG.30, I919.

Patented Oct. 25, 1921.

(gm 00 141 06 HGOTTL as FuEq-EL 1 ERMA Y Sch/M10 QQL AM/w GU70: MQI

M iiwzvg UNITED STATES PATENT OFFICE.

GOTTLOB FUEGEL AND HERMAN SCHMID, OF BROOKLYN, NEW YORK ,ASSIGNORS, BY MESNE ASSIGNMENTS, TO APOLLO MAGNETO CORPORATION, OF BROOKLYN, NEW

YORK, A CORPORATION OF DELAWARE.

Specification of Letters Patent.

Patented Oct. 25, 1921.

Application filed August 30, 1919. Serial No. 320,918.

' To all whomit may concern.

Be it known that we, GorrLoB FUEGEL and HERMAN SorLMn), who were formerly subjects of the German Empire, but who haveseverally renounced all allegiance to said power and declared our intentions of becoming citizens of the United States, residing in Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Timer-Rings for Ignition Systems, of which the following is a specification.

Our invention relates to an improved timer ring for the ignition systems of internal combustion engmes; especially a timer ring constructed to be part of an ignition magneto and to house and control the terminals for opening and closing the circuit of the generating winding of same.

In all ignition magnetos, the terminals for making and breaking the ignition circuit are actuated in accordance with the rotation of the armature; and when such terminals are mounted on thearmature, one of'them is relatively stationary and the other relatively movable; the latter being carried by a lever which is operated by being made to engage with projections adapted to cause the terminals to separate and then allow them to come together again at suitable intervals. In our invention the timer ring receives an element having portions by which the timer terminals are forced apart at each instant ofignition and the timer lever, running in contact with said element is properly lubricated to provide for smooth and sure action.

The objects and advantages of our invention will more fully appear as the description proceeds, reference being had to the accompanying drawings which disclose one mode by which our invention may be practised. We do not wish, however, to be limited to the exact structure shown herein, butreserve the right to make changes in the shape, size, arrangement of parts, and other details, without departing from the spirit and nature of our invention as the same is set forth by the general meanings of the terms of the appended claims;

On the drawin Figure 1 is a view showing in outline the front of a magneto, with a member whereon the timer ring is mounted; i

Fig. 2 is a vertical, longitudinal, sectional view showing the timer ring in position;

Fig. 3 is a front view of the timer ring, with the rest of the timer construction in outline Fig. 4 is a section on the line 4-4 of Fig. 3; and

Fig. 5 is a view of an arrangement of,

lubricating members employed in our invention.

The same numerals identify thesame parts throughout.

In the particular description of our invention we show in outline at 1 on Fig. 1 a portion of the housing or framework of an ignition magneto, this portion carrying the magnets, not illustrated, and inclosing the armature chamber. On the housing is placed the distributer gear casing 2, havin a central opening 3 for the shaft of the distributer gear, which is driven as usual by a gear on the armature shaft. The housing 1' also carries at the front of the magneto a member or so-called triangle piece 4, having a central opening 5 through which the armature shaft can pro ect a slight distance. Our timer or circuit breaker ring 6 is mounted on the triangle iece 4, which has a cylindrical projection with a forwardextending flange 8 to fit into one end of the ring 6, as presented in Fig. 2', for the purpose stated. The ring 6 is open at both ends, and on the inside it has a slanting shoulder 9, against which is disposed an annular cam element 10, secured in the ring 6 by any means that is suitable. The ring 6 thus serves as a support for the element 10.

When the magneto is completed and ready for service the shaft of the armature will project through the opening 5 as above mentioned, and inside the. ring 6 it will carry a head or plate 11, shown in outline on Fig. 3. This plate will have movably afiixed thereto a timer or circuit breaker lever 12 held in position by springs 13 which are secured to lever 12 and to a proconnected to ground. Hence whenever the terminal on the lever 12 is forced away from the termmal onthe screw 15', the cir- '19. While the fiber member 17 isrunning over the portions 18 the terminals on the lever 12 and screw 15' can make contact with each other; and when the fiber body 17 is running on the portions 19 the terminals on the lever 12 and screw 15 will be forced apart. The element 10 is made by taking a ring with a circular inner face and machining out portions at the opposite ends of a diameter to makethe ring thinner thereat and thus the portions 18 are produced. The ring .6 may also have arms 20 to enable it to be turned to a predetermined extent on the piece 4 so that the spark can be advanced or retarded; and the recess 21 in the rear end of the ring, receiving a stop 22 at the lower part of the piece 4, fixes the range of adjustment. Also below the ring 6 projectin forward (from the piece 4 is an arm 23 whlch carries a spring-clamp 24 that can be moved on the arm 23 as an axis. This spring-clamp 24 serves to hold a cap on the front end of the ring 6 and thus completely close the ring, whereby all the fixed and movable parts inside of this ring will be protected. To get access to the inside of the ring, one need only move the springclamp 24 to one side revolving it toward or from the observer with respect to Fig. 2, to enable the cap to be taken off.

The annular cam element 10 has a circumferential groove 25 on its outer face, and is 7 provided with two ducts or passages 26 leading from this groove to the inner face of the ring. In the groove 25 we place two pieces of absorbent material or wick 27 ar ranged as shown in Fig. 5 and having their ends in the passages or ducts 26. Further the triangular member 4 is provided with one or more oil grooves 28 which open at one end through the outside of the projection 7 and flange 8, and open at the other end into a recess 29, concentric with the opening 5,. This recess is on the inner face of the piece 4 and is provided for the purpose of holding the ball-bearings for the armature shaft.

. In operation, the oil supplied to the armature bearings will trickle down through the ducts 28 between the timer ring 6 and the flange 8. It will then run into the wedgeshaped annular space between the shoulder 9 and cam element 10 and creep between the ring 10 and casing 6 into the groove 25. Thus the pieces of wick 27 will be saturated; and as these pieces project through to the inner face of the element 10, the fiber body 17 running upon the inner face of this element will carry enough oil around with it to eliminate friction. The operation of the lever 12 is thus made smooth and certain, and the wear of the parts is reduced to a minimum.

Having described our invention, what we shoulder to receive a cam element to be disposed adjacent said shoulder, and a member for mounting said support, said member having a passage leading to the interior of said support to supply a lubricant to said shoulder.

3. The combination of an annular support having a slanting annular shoulder inside, an annular cam element in said support adjacent the shoulder, said element having a groove in its outer face and a passage leading from the groove to the inner face of said element, and absorbent material in said groove and passage.

4. A support having a slanting interior shoulder to receive a cam element to be disposed adjacent said shoulder, and a member for mounting said support, said member having a passage for supplying a lubricant to the interior of said support at a point in proximity to said shoulder, said. cam element having a groove in its outer face and a passage leading from the groove to the inner face of the element, with absorbent material in said groove and passage.

In testimony whereof, we have signed our names to this specification this 22nd day of May, 1919.

GOTTLOB FUEGEL. HERMAN sornnin. 

